Device for accommodating slivers into a sliver can

ABSTRACT

THIS INVENTION RELATES TO A DEVICE FOR ACCOMMODATING SLIVERS INTO A SLIVER CAN, IN WHICH THE PRESSURE ONTO THE SLIVER COIL IN THE CAN IS MAINTAINED SUBSTANTIALLY CONSTANT, THE SLIVER CAN IS PROVIDED WITH A MOVABLE BOTTOM PLATE, WHICH BOTTOM PLATE BEING SUPPORTED BY A CONTROLLABLE PANTAGRAPH MECHANISM IN A CAN WHEEL IN A COMPACT FORM AT THE TIME OF CHANGE OF THE CAN, AND WHEN ACCOMMODAT-   ING THE SLIVER SAID BOTTOM PLATE IS ADAPTED TO BE SLOWLY LOWERED.

Get. 26, 1971 H|DEJ|RO ARAKl EI'AL 3,614,814

DEVICE FOR ACCOMMODATING SLIVERS INTO A SLIVER CAN Filed Oct. 24, 1969 5 Sheets-Sheet 1 INVENTORS HIDEJNRO ARAKI IKUO KODAMA BY izdiaa ATTORNEYS Oct. 26, 1971 HIDEJIRO ARAK| ETAL 3,614,814

DEVICE FOR ACCOMMODATING SLIVERS INTO A SLIVER CAN Filed Oct. 24, 1969 5 SheetsShoct 2 i lli u as? IN VENTORS HI DEJIRO ARAKI IKUO KODAMA BY MM fimnfizw ATTORNEYS- Oct. 26, 1971 H|DEJ|RO ARAK| ETAL 3,614,814

DEVICE FOR A-CCOMMODATING SLIVERS INTO A SLIVER CAN Filed 001?. 24, 1969 5 Sheets-Sheet 5 Kim INVENTORS HIDEJIRO ARAKI FIGS IKUO KODAMA ATTORNEYS Oct. 26, 1971 H|DEJ|RQ ARAK| EI'AL 3,614,814

DEVICE FOR ACCOMMODATING SLIVERS INTO A SLIV E R CAN Filed Oct. 24, 1969 5 Sheets-Sheet 4 mvsmons HIDEJIRO ARAKI IKUO KODAMA ATTORNEYS Get. 26, 1971 I HIDEJIRO ARAKl ETAL 3,614,814

DEVICE FOR ACCOMMQDATING SLIVERS INTO A SLIVER CAN Filed Oct. 24, 1969 5 Sheets=$heet 5 INVENTORS HIDEJIRO ARAKI IKUO KODAMA ATTORNEYS United States Paten ABSTRACT OF THE DISCLOSURE This invention relates to a device for accommodating slivers into a sliver can, in which the pressure onto the sliver coil in the can is maintained substantially constant. The sliver can is provided with a movable bottom plate, which bottom plate being supported by a controllable pantagraph mechanism in a can wheel in a compact form at the time of change of the can, and when accommodating the sliver said bottom plate is adapted to be slowly lowered.

Due to the recent tendency of employing large packages in the spinning industry, it has been proposed to increase the amount of the sliver received in the sliver cans, usually by employing large sized sliver cans and by employing higher density of the layers of coiled sliver accommodated in the can. Employment of a larger sliver can, however, results in various disadvantages.

The principal object of the present invention is to provide an improved sliver-accommodating means in which said disadvantages are removed.

Other objects in view which will more fully appear, the nature of the invention will be more clearly understood by the following the description, the appended claims, and the several views illustrated in the accompanying drawings.

FIG. 1 is a sectional view showing the device according to this invention;

FIG. 2 shows a detail of a part of a can wheel provided with an oblong slot;

FIG. 3 is a vertical section of the can wheel forming the base portion of the can;

FIG. 4 shows a vertical section of the sliver can and the can wheel with the lower parts of the pantagraph mechanism;

FIG. 5 is a somewhat enlarged sectional view of the can wheel with the pantagraph mechanism therein;

FIG. 6 is a similar sectional view of the can wheel with the lower part of the pantagraph mechanism therein and FIG. 7 is a perspective view of the arrangement of the driving gearing for a screw-type pantagraph driving mechanism.

Referring to the drawings, 1 is a coiler wheel of a drawing frame, and 2 is a sliver can disposed beneath said coiler wheel 1. Said can 2 is provided with a movable bottom plate 3, which is supported by a stopper 4. A can wheel 5 supporting the can 2 is of a cylindrical form extending through a floor 6. The can wheel 5 is journalled on a foundation 7 by means of bearings 8 (FIG. 3), and is adapted to be driven by a gear 9* fixed to the lower end thereof.

According to this invention, a pantagraph mechanism is provided in said can wheel 5. The lower part of the pantagraph mechanism consists of two main links 19, 19 each of which has at its lower end a roller 21, 21' controlled by a guide 20 formed in the can wheel 5. The inner ends of said links 19, 19 are connected to a pro- 3,614,814 Patented Oct. 26, 1971 jection 17. The upper ends of the links 19, 19' are connected to the pantagraph link elements 22. Since upper ends of the pantagraph mechanism support the bottom plate 3 of the sliver can, it will be seen that it is possible to attain larger displacement of said bottom plate 3 by means of minor displacement of the lift acting upon the main links 19, 19'. In the non-operable position, said mechanism may be arranged in a small space in the can wheel 5.

The operation of the invention will now be described referring to the embodiment shown in FIGS. 1 to 3. The pantagraph mechanism per se will be rotated to rotate the bottom plate 3 according to the rotation of the sliver can 2. Said projection 17 is in engagement with an oblong slot 18 formed in the can wheel 5'. In order to exert vertical movement to the bottom plate 3, said projection 17 is mounted to a cylindrical slide 12 which is adapted to slide vertically relative to the can wheel 5. The projection 17 is connected to a rack 28 which is in engagement with a pinion 27.

At the start of receiving sliver coils, the pinion 27 is rotated to lift the rack 28 in order to lift the bottom plate 3 to the position near the mouth of the sliver can 2. Slight movement of the slide 12 will result in larger movement of the bottom plate 3. During accommodation of the sliver, the sliding cylinder 12 will be rotated by means of rotation of the can wheel 5, whereby transmitting rotation to the bottom plate 3 as well as to the pantagraph mechanism. At this time, slow lowering movement of the rack 28 will result in lowering movement of the sliding cylinder 12, so that the pantagraph mechanism will slowly be lowered, and the bottom plate 3 will be lowered slowly, so that the sliver will be piled at constant pressure. At the finish of accommodation of a predetermined amount of the sliver, the bottom plate 3 will abut against the stopper 4, and the pantagraph mechanism will sink beneath the upper opening of the can wheel 5, whereupon the operation of the mechanism is stopped, whereby a can change may be readily effected. When an empty can is put on, the operation of the pinion 27 is started, thereby the pantagraph mechanism will be pushed up out of the upper opening 26 of the can wheel 5, so that the bottom plate 3 will be pushed up to reach the upper opening of the can 2, so that the operation is re-started. At the start of accommodation of coil of sliver, the pinion 27 will lift the rack 28 to push, guide or slide 12 upwardly, whereby the pantagraph mechanism will be considerably displaced in spite of slight displacement of said guide 12, and the bottom plate 3 will be moved to the upper opening of can 2.

During the sliver accommodating operation, the guide 12 will also be rotated according to rotation of the can wheel 5, thereby transmitting rotation to the pantagraph mechanism and the bottom plate 3. Upon an extremely slow lowering movement of the rack 28, the guide 12 will also be lowered, so that the pantagraph mechanism and the bottom plate 3 will slowly be lowered, whereby the sliver coil may be accommodated under predetermined pressure.

Upon completion of accommodation of the predetermined amount of sliver coil, the bottom plate 3 is supported by means of the stopper 4, and the pantagraph mechanism will be lowered through the upper opening 26 of the can wheel 5, whereupon the operation thereof is stopped, so that the sliver can maybe readily changed. When an empty can is placed upon the can wheel 5, the pantagraph mechanism will be lifted from the opening 26 of the can wheel 5, and the bottom plate 3 will be raised to the position near the upper opening of the new sliver can, so that further operation will be started. From the foregoing, it will be seen that during operation the position of the bottom plate 3 may be displaced for the full length of the sliver can 2, and that while the device is inoperative the pantagraph mechanism may be stored in the small space in the can wheel 5.

According to this invention, the driving means for the pantagraph mechanism may consist of a screw device as shown in a modified form of the embodiment of FIGS. 4 to 7. Referring to FIGS. 4 to 7, the cylindrical can wheel 5 is disposed beneath the floor 6. This can wheel 5 is journaled on a bearing 8 and is adapted to be driven by means of a gear 9. The can wheel 5 is provided with a central sliding guide wall 10. A sliding cylinder 12- having a female screw 11 is inserted for sliding movement along said guide wall 10. Beneath the can wheel 5, there is a shaft journaled on a bearing 13 and having a gear 14 at the lower end. At the upper end, said shaft 15 has a male screw thread 16 or screw bolt meshing with said female screw thread 11.

In the above-mentioned embodiment, in order to make a relative speed difference to the screws 11 and 16, a projection 17 fixed to the sliding cylinder 12 is inserted into the oblong slot 18 formed in the can wheel 5, so that the sliding cylinder 12 may rotate in unison with the can wheel 5. Said oblong slot 18 extend vertically, so that the cylinder 12 can slide vertically. Consequently, according to the rotation of the gear 9, while the can wheel 5 and the sliding cylinder 12 are rotated in unison, the screw bolt 16 driven by the gear 14 is adapted to raise or lower the sliding cylinder 12 owing to differential speed of the screw bolt 16 and the screw 11.

According to such vertical movement of the sliding cylinder 12, the bottom plate 3 supported by the upper end of the pantagraph mechanism can be largely displaced upwardly or downwardly. Just before starting the operation, the bottom plate 3 has to be lifted near to the upper opening of the can and, for that purpose, a separately provided motor M is started. Between the gear 9 connected to a main motor (not shown) for driving the can wheel 5 and the gear 14 for driving the screw 16, there is provided a differential gear mechanism, of which a sun gear 24 (FIG. 7) has a shaft 25 connected to the motor M. Upon the start of operation of said motor M, rotation is transmitted to the gear 14 through the gear train including the change gear 23. While the sliding cylinder 12 remains stopped, the screw 16 only will be rotated, whereby the pantagraph will project through the upper opening of the can wheel 5, and thus rapidly be raised, so that the bottom plate 3 will be raised near to the upper opening of the can 2. After stop of the said motor M, upon start of operation of said main motor, the sliver accommodation operation will be started, and rotation is transmitted from an input shaft 27 to the gear 9 for driving the can wheel 5, the rotation being transmitted to the gear 14 for driving the screw 16, due to the fact that there is a relative speed difference between the screws 11 and 16, thus the sliding cylinders 12 will be lowered slowly. In this case, the bottom plate 3 will be largely displaced. Thus, for a small displacement of the sliding cylinder 12, the bottom plate 3 may be largely displaced. It will be seen that for a predetermined number of rotations of the can wheel and the sliding cylinder 12 the relative speed difference between the screws 11 and 16 may be predetermined, and that the number of sliver coil layers received in the can 2 may be changed by the change gear 23 of said differential gear mechanism.

As hereinbefore mentioned, according to the present invention, two rotational motions of the same direction and different speed provide the relative differential speed of the screw device, and this is transmitted to one of the screw elements as a small vertical displacement, from which the panfagraph mechanism is extensively displaced. Further, according to this invention, there is adopted a differential mechanism in the screw device actuating mechanism, and means is provided for determining the number of. teeth of said differential gear, thereby determining the number of layers of the sliver coil received in the sliver can 2.

Referring to FIG. 7, as the relative speed difference of the screw mechanism is a factor for determining the number of layers of the sliver coil in the sliver can, there is provided between the gear 9 for driving the sliding cylinder 12 and the gear 14 for driving the screw bolt 16, a differential gear mechanism including a change gear 23 which may be in proportion to the number of layers of the sliver coil in the sliver can.

Assuming now that the rotational speed of the gear 9 for driving the sliding cylinder 12 be N the rotational speed of the gear 14 for driving the screw bolt 16 be N and considering the relation between N and N it will be seen that the product of the balance between N and N and the pitch (PITCH) of the screw 11, 16, is equal to the amount of displacement (LIFT) of the sliding cylinder 12;

PITCH (N -N )=LIFT As the rotational speed N of the gear 9 (i.e. speed of the can wheel 5) is equal to LAYER (number of layers of the sliver coil in the can 2),

N N LIE T 1 N PITCH LAYER Consequently, the relative speed ratio of the gears 9 and 14 is 92 15 5: 1 2 CHANGE 82 60 15 2 (shaft 25 is assumed 1 CHANGE 82 to be stationary) Consequently, relative speed ratio will be N CHANGE 82 Now, the co-relation between said number of layers of sliver coil (LAYER) and the change gear 23 (CHANGE) will be established. Yet, variation of the number of teeth of change gear 23 will be in proportion to change of layers of sliver coil according to From the foregoing, according to this invention, it will be seen that it is necessary that the change gear 23 adapted to be changed in proportion to the number of layers of the sliver coil is arranged in the differential gear provided between the gear 9 for driving the can wheel 5 and the gear 14 for driving the screw bolt 16, so that it is possible to determine the number of layers of sliver coil, yet maintaining the constant pressure upon the sliver in the can 2.

Pressure of the differential gear mechanism serves particularly at the start of operation of this apparatus. Just before start of operation it is necessary that the bottom plae 3 be lifted near to the upper opening of the sliver can 2. For this purpose, the motor M connected to the shaft 25 of the sun gear 24 of the differential gear mechanism is driven, whereby rotation is transmitted to the gear 14 driving the screw bolt 16 through said gear train including said change gear 23, without influencing the gear 9 for driving the can wheel 5, thereby driving the LAYER=CHANGE =CHANGE 2.004

screw bolt 16 only, while the sliding cylinder 12 is not driven, so that the pantagraph mechanism will rapidly be lifted out of the upper opening 26, and the bottom plate 3 will be raised near to the upper opening of the can 2. After the motor M is stopped, the main motor (not shown) will start and the sliver accommodating operation will be started, power being transmitted from the input shaft 27, the gears 9 and 14.

According to this invention, the pantagraph mechanism is displaced within a wide limit, so that the sliver may be accommodated in the can under constant pressure in a desired number of coils.

It is of course to be understood that the details of structure and arrangement of parts may be variously changed and modified without departing from the spirit and scope of this invention.

What we claim is:

1. A device for accommodating coils of a sliver into a sliver can, comprising a coiler wheel, a sliver can arranged beneath said coiler wheel, a bottom plate adapted to be moved upwardly and downwardly within said sliver can, a rotatable can wheel supporting said sliver can and having means associated therewith to transmit rotational movement to said bottom plate, said means including a pantagraph mechanism adapted to support said bottom plate in the upper position of the sliver can when said pantagraph mechanism is in the operative position, said pantagraph mechanism when in the inoperative position being accommodated in said can wheel, and a driving means engaging with the bottom end of said pantagraph mechanism for raising said pantagraph mechanism and said bottom plate into said upper position and lowering said pantagraph mechanism and said bottom plate to said inoperative position.

2. A device for accommodating coils of sliver into a sliver can as recited in claim 1, wherein said driving means is connected with the base of said pantagraph mechanism and comprises a sliding element adapted to be slidable within and rotated by said can wheel.

3. A device for accommodating coils of a sliver into a sliver can as recited in claim 2, wherein said sliding element is adapted to be rotated at the same speed as said can wheel.

4. A device for accommodating coils of a sliver into a sliver can as recited in claim 3, wherein said can wheel has an oblong slot therethrough and said pantagraph mechanism has a projection connected to the base thereof and extending through said oblong slot, whereby rotation of said can wheel is transmitted to said sliding element.

5. A device for accommodating coils of a sliver into a sliver can as recited in claim 2, wherein said driving means further comprises a rack connected with said sliding element, and pinion means for driving said rack, whereby said pantagraph mechanism is lowered and elongated for lowering and lifting said bottom plate.

6. A device for accommodating coils of a sliver into a sliver can as recited in claim 2, wherein said driving means further comprises screw thread means formed interiorly of said sliding element, a screw bolt threadably engaging said screw thread means, and means to rotate said screw bolt at a speed different from that of said sliding element, whereby said pantagraph mechanism is lowered and elongated so that said bottom plate is lowered and lifted.

References Cited FOREIGN PATENTS DORSEY NEWTON, Primary Examiner 

